Abstract
We report on the developed system for the detection of the objects hidden under people’s clothes. The system is based on a commercially available THz camera equipped with specially designed software for image processing and fusion. Additionally, a camera for visible light registers the image that is later processed and combined with the THz image by means of the designed fusion algorithm. Such final fused image significantly increases the visibility of the detected elements. A very important aspect of the usefulness of various image processing techniques is the proper evaluation of the image quality. We propose a combination of two image quality assessment methods as a methodology used for the quality estimation of fused images and for comparing image fusion algorithms. Moreover, we designed and constructed a moving, wirelessly-controlled thermal phantom for testing of the functioning of the cameras in the terahertz range. The terahertz camera operating at 0.25 THz and the standard thermal camera were used for tests. We compared the images taken for the phantom and a man and we obtained satisfactory similarities both for naked and dressed targets with hidden items (guns, knives, bombs). The temperature stability of the phantom is sufficient for the evaluation of those cameras.
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Palka, N., Kowalski, M., Ryniec, R., Szustakowski, M., Czerwińska, E. (2014). THz Screening for Civil and Military Security. In: Corsi, C., Sizov, F. (eds) THz and Security Applications. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-8828-1_11
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DOI: https://doi.org/10.1007/978-94-017-8828-1_11
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